Class: CephRuby::Xattr

Inherits:
Object
  • Object
show all
Defined in:
lib/ceph-ruby/xattr.rb

Overview

Representation of a File extended Attribute

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rados_object, name) {|_self| ... } ⇒ Xattr

Returns a new instance of Xattr.

Yields:

  • (_self)

Yield Parameters:

Raises:

  • (Errno::ENOENT) 


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# File 'lib/ceph-ruby/xattr.rb', line 6

def initialize(rados_object, name)
  raise Errno::ENOENT, 'RadosObject is nil' unless rados_object.exists?
  raise SystemCallError.new(
    'xattr name cannot be nil',
    Errno::ENOENT::Errno
  ) if name.nil?
  self.rados_object = rados_object
  self.pool = rados_object.pool
  self.name = name
  yield(self) if block_given?
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/ceph-ruby/xattr.rb', line 4

def name
  @name
end

#pool ⇒ Object

Returns the value of attribute pool.



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# File 'lib/ceph-ruby/xattr.rb', line 4

def pool
  @pool
end

#rados_object ⇒ Object

Returns the value of attribute rados_object.



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# File 'lib/ceph-ruby/xattr.rb', line 4

def rados_object
  @rados_object
end

Instance Method Details

#destroy ⇒ Object

Raises:

  • (SystemCallError) 


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# File 'lib/ceph-ruby/xattr.rb', line 26

def destroy
  log('destroy')
  ret = Lib::Rados.rados_rmxattr(pool.handle,
                                 rados_object.name,
                                 name)
  raise SystemCallError.new("destruction of xattr '#{name}' failed",
                            -ret) if ret < 0
end

#log(message) ⇒ Object 



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# File 'lib/ceph-ruby/xattr.rb', line 39

def log(message)
  CephRuby.log('rados obj xattr '\
               "#{rados_object.name}/#{name} #{message}")
end

#to_s ⇒ Object 



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# File 'lib/ceph-ruby/xattr.rb', line 35

def to_s
  read
end

#value(size = 4096) ⇒ Object 



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# File 'lib/ceph-ruby/xattr.rb', line 18

def value(size = 4096)
  read size
end

#value=(value) ⇒ Object 



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# File 'lib/ceph-ruby/xattr.rb', line 22

def value=(value)
  write value
end